Reyna's perception of Jason Grace is that he embodies the ideal image of an all-American boy, representing traits of heroism and charm. She associates him with positive qualities that resonate with traditional American values, making her admiration for him clear.
In contrast, Thalia's appearance and demeanor significantly diverge from this ideal. Reyna quirks that Thalia resembles someone more associated with danger, suggesting a rebellious or fierce character. This juxtaposition highlights the stark differences between their personalities and appearances, underscoring Reyna's complex feelings towards both characters.